What did you do to your Ranger today? (Part Deux!)

[sgtsandman]

Put in new hood bumpers and plug wires on the ‘07 2.3 w/ 170k. Discovered oil in the plug wells. Could be CHT sensor leaking or more likely valve cover gaskets. Ordered the 19mm deep well socket for the CHT sensor.

The last time I had that, it was the donuts for the sparkplug tubes. OEM or Felpro were the only ones I could trust.

 

[Jazzer]

Got a Fel Pro valve cover gaskets on order. I’m unsure what you mean by spark plug tube donuts?

 

[sgtsandman]

Got a Fel Pro valve cover gaskets on order. I’m unsure what you mean by spark plug tube donuts?

It was a Honda CR-V. On their engines, the spark plug tubes have their own gaskets because the spark plugs come in through the valve cover between the dual over head cams. The 2.3 Ecoboost is a similar setup.

In any case, it sounds like you have a valve cover seal problem, even if you have your spark plugs on the side of the head instead of on top.